RH137

1

Negative AdjustableRegulator

RH137

VIN

2k 243Ω

ADJ

RH137 BI

OUTPUT–30V

Power Dissipation ............................... Internally LimitedInput-to-Output Voltage Differential ......................... 30VOperating Junction

Temperature Range ......................... –55°C to 150°CStorage Temperature Range ................. –65°C to 150°CLead Temperature (Soldering, 10 sec).................. 300°C

D

U

ESCRIPTIO A

U

G

W

A

W

U

W

ARBSOLUTE XI TI S

WU U

PACKAGE/ORDER I FOR ATIO

BOTTOM VIEW

ADJ

VOUT

VIN

CASE IS INPUT

H PACKAGE3-LEAD TO-39 METAL CAN

1

2

3

2

1

VOUT

CASE IS VIN

ADJ

K PACKAGE2-LEAD TO-3 METAL CAN

(STEEL)

BOTTOM VIEW

The RH137 negative adjustable regulator will deliver up to1.5A output current over an output voltage range of –1.2Vto –22V.

Every effort has been made to make these devices easy touse and difficult to damage. Internal current and powerlimiting coupled with true thermal limiting prevents devicedamage due to overloads or shorts, even if the regulator isnot fastened to a heat sink.

Maximum reliability is attained with Linear Technology’sadvanced processing techniques combined with a 100%burn-in in the thermal limit mode. This assures that alldevice protection circuits are working and eliminates fieldfailures experienced with other regulators that receiveonly standard electrical testing.

The wafer lots are processed to Linear Technology’s in-house Class S flow to yield circuits usable in stringentmilitary applications.

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.All other trademarks are the property of their respective owners.

BUR -I CIRCUITU U

RH137

2

10KRAD(Si) 20KRAD(Si) 50KRAD(Si) 100KRAD(Si) 200KRAD(Si)SYMBOL PARAMETER CONDITIONS NOTES MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX UNITS

VREF Reference ⏐VIN – VOUT⏐ ≤ 5V, –1.225 –1.275 –1.225 –1.275 –1.225 –1.275 –1.225 –1.275 –1.22 –1.28 VVoltage IOUT = 10mA

3V ≤ ⏐VIN – VOUT⏐ ≤ 30V, –1.2 –1.3 –1.2 –1.3 –1.2 –1.3 –1.2 –1.3 –1.2 –1.3 V10mA ≤ IOUT ≤ IMAX, P ≤ PMAX

ΔVOUT Line 3V ≤ ⏐VIN – VOUT⏐ ≤ 30V, 2 0.02 0.02 0.02 0.02 0.02 %/V

ΔVIN RegulationΔV

OUT Load 10mA ≤ IOUT ≤ IMAX, 2 25 25 25 25 25 mVΔIOUT Regulation ⏐VOUT⏐ ≤ 5V

10mA ≤ IOUT ≤ IMAX, 2 0.5 0.5 0.5 0.5 0.5 %⏐VOUT⏐ ≥ 5V

TA = 25°C SUB- SUB-SYMBOL PARAMETER CONDITIONS NOTES MIN TYP MAX GROUP MIN TYP MAX GROUP UNITS

VREF Reference Voltage ⏐VIN – VOUT⏐ = 5V, IOUT = 10mA –1.225 –1.275 1 V

3V ≤ ⏐VIN – VOUT⏐ ≤ 30V, –1.200 –1.300 1 –1.200 –1.300 2, 3 V10mA ≤ IOUT ≤ IMAX, P ≤ PMAX

ΔVOUT Line Regulation 3V ≤ ⏐VIN – VOUT⏐ ≤ 30V 2 0.02 1 0.05 2, 3 %/VΔVIN

ΔVOUT Load Regulation 10mA ≤ IOUT ≤ IMAX, ⏐VOUT⏐ ≤ 5V 2 25 1 50 2, 3 mVΔIOUT 10mA ≤ IOUT ≤ IMAX, ⏐VOUT⏐ ≥ 5V 2 0.5 1 1 2, 3 %

Thermal Regulation 10ms Pulse 0.02 1 %/W

Ripple Rejection VOUT = –10V, f = 120Hz, CADJ = 0 60 dB

VOUT = –10V, f = 120Hz, 3 66 66 dBCADJ = 10μF

IADJ Adjust Pin Current 100 1 100 2, 3 μA

ΔIADJ Adjust Pin Current 10mA ≤ IOUT ≤ IMAX 5 1 5 2, 3 μAChange 3V ≤ ⏐VIN – VOUT⏐ ≤ 30V 5 1 5 2, 3 μA

IMIN Minimum Load ⏐VIN – VOUT⏐ = 30V 5 1 5 2, 3 mACurrent ⏐VIN – VOUT⏐ ≤ 10V 3 1 3 2, 3 mA

Current Limit ⏐VIN – VOUT⏐ ≤ 15V H Package 5 0.5 1 0.5 2, 3 AK Package 5 1.5 1 1.5 2, 3 A

⏐VIN – VOUT⏐ = 30V H Package 5 0.15 1 AK Package 5 0.24 1 A

ΔVOUT Temperature Stability –55°C ≤ TJ ≤ 125°C 3 0.6 %ΔTemp

ΔVOUT Long Term Stability TA = 125°C 3 1 %ΔTime

en RMS Output Noise 10Hz ≤ f ≤ 10kHz 0.003 %

θJC Thermal Resistance H Package 3 15 °C/W(Junction to Case) K Package 3 3 °C/W

TABLE 1: ELECTRICAL CHARACTERISTICS (Preirradiation) (Note 1)

TABLE 1A: ELECTRICAL CHARACTERISTICS (Postirradiation) (Note 4)

–55°C ≤ TA ≤ 150°C

RH137

3Information furnished by Linear Technology Corporation is believed to be accurate and reliable.However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

TABLE 1A: ELECTRICAL CHARACTERISTICS (Postirradiation) (Note 4)

Note 1: Unless otherwise specified, these specifications apply for⏐VIN – VOUT⏐= 5V; and IOUT = 0.1A for the H package (TO-39) andIOUT = 0.5A for the K package (TO-3) package. Although power dissipationis internally limited, these specifications are applicable for powerdissipations of 2W for the TO-39 and 20W for the TO-3. IMAX is 0.2A forthe TO-39 and 1.5A for the TO-3 package.Note 2: Regulation is measured at a constant junction temperature usingpulse testing with a low duty cycle. Changes in output voltage due toheating effects are covered under the specification for thermal regulation.

Note 3: Guaranteed by design, characterization or correlation to othertested parameters.Note 4: TJ = 25°C unless otherwise noted.Note 5: ISC is tested at the ambient temperatures of 25°C and –55°C. ISCcannot be tested at the maximum ambient temperature of 150°C due tothe high power level required. ISC specification at 150°C ambient isguaranteed by characterization and correlation to 25°C testing.

MIL-STD-883 TEST REQUIREMENTS SUBGROUP

Final Electrical Test Requirements (Method 5004) 1*,2,3

Group A Test Requirements (Method 5005) 1,2,3

Group B and D End Point Electrical Parameters 1,2,3(Method 5005)

* PDA Applies to subgroup 1. See PDA Test Notes.

PDA Test NotesThe PDA is specified as 5% based on failures from group A, subgroup 1,tests after cooldown as the final electrical test in accordance with method5004 of MIL-STD-883. The verified failures of group A, subgroup 1, afterburn-in divided by the total number of devices submitted for burn-in inthat lot shall be used to determine the percent for the lot.Linear Technology Corporation reserves the right to test to tighter limitsthan those given.

TABLE 2: ELECTRICAL TEST REQUIRE E TS

UW

TOTAL DOSE BIAS CIRCUIT

RH137

+15V

VIN

243Ω2k

21ADJ

–15V RH137 TDBC

OUTPUT

CASE

10KRAD(Si) 20KRAD(Si) 50KRAD(Si) 100KRAD(Si) 200KRAD(Si)SYMBOL PARAMETER CONDITIONS NOTES MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX UNITS

IADJ Adjust Pin 100 100 100 100 100 μACurrent

ΔIADJ Adjust Pin 10mA ≤ IOUT ≤ IMAX 5 5 5 5 5 μACurrent 3V ≤ ⏐VIN – VOUT⏐ ≤ 30V 5 5 5 5 5 μAChange

IMIN Minimum ⏐VIN – VOUT⏐ = 30V 5 5 5 5 5 mALoad Current ⏐VIN – VOUT⏐ ≤ 10V 3 3 3 3 3 mA

Current Limit H Package ⏐VIN – VOUT⏐ ≤ 15V 0.5 0.5 0.5 0.5 0.5 A

⏐VIN – VOUT⏐ = 30V 0.15 0.15 0.15 0.15 0.15 A

K Package ⏐VIN – VOUT⏐ ≤ 15V 1.5 1.5 1.5 1.5 1.5 A⏐VIN – VOUT⏐ = 30V 0.24 0.24 0.24 0.24 0.24 A

RH137

4

TYPICAL PERFORMANCE CHARACTERISTICS

UW

Reference Voltage Current Limit Adjust Current

Minimum Load Current Dropout Voltage Regulation

TOTAL DOSE KRAD (Si)1

REFE

RENC

E VO

LTAG

E (V

)

1.28

1.27

1.26

1.25

1.24

1.23

1.2210 100 1000

RH137 G01

3V ≤ ⏐VIN – VOUT⏐ ≤ 30V10mA ≤ IOUT ≤ IMAX

TOTAL DOSE KRAD (Si)1

CURR

ENT

LIM

IT (A

)

3.0

2.5

2.0

1.5

1.0

0.5

0

–0.510 100 1000

RH137 G02

⏐VIN – VOUT⏐ = 5V

⏐VIN – VOUT⏐= 30V

TOTAL DOSE KRAD (Si)1

ADJU

ST C

URRE

NT (μ

A)

100

90

80

70

60

50

4010 100 1000

RH137 G03

⏐VIN – VOUT⏐ = 30V

TOTAL DOSE KRAD (Si)1

MIN

IMUM

LOA

D CU

RREN

T (m

A)

3.0

2.5

2.0

1.5

1.0

0.5

010 100 1000

RH137 G04

⏐VIN – VOUT⏐ = 10V

TOTAL DOSE KRAD (Si)1

DROP

OUT

VOLT

AGE

(V)

3.0

2.5

2.0

1.5

1.0

0.5

010 100 1000

RH137 G05

(VIN – VOUT) = 10V

TOTAL DOSE KRAD (Si)1

REGU

LATI

ON (m

V)

14

12

10

8

6

4

2

010 100 1000

RH137 G06

LOAD

LINE

Linear Technology Corporation1630 McCarthy Blvd., Milpitas, CA 95035-7417(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com © LINEAR TECHNOLOGY CORPORATION 1990

LT 1007 REV C • PRINTED IN USA

I.D.No. 66-10-0175 Rev. C 1007